Kenwood TK-7180 Service Manual page 82

OPTIONAL ACCESSORIES: KRK-10 (Control Head Remote Kit: 23ft/7m)
■ Schematic Diagram
INTERFACE UNIT (X46-3310-20) (A/2)
CN1
1
SPI
2
SPI
3
SPI
4
SPI
5
SPI
6
SPI
7
GND
8
8C
9
SB
10
SB
11
NC
12
PSW
13
GND
14
GND
15
MIC
16
ME
17
GND
18
PSENS
19
RST2
20
(LCDRST)
21
(LCDDI)
22
(LCDDO)
23
(CLK)
24
SHIFT
25
5C
26
NC
27
TXD
28
RXD
29
GND
30
(DM)
E40-6371-05
INTERFACE UNIT (X46-3310-20) (B/2)
CN4
14
SPI
13
GND
12
8C
11
SB
10
GND
9
PSW
8
MIC
7
ME
6
PSENS
5
RXD
4
TXD
3
GND
2
SHIFT
1
RST2
E40-6377-05
A
IC2
D9~11 : DA204U
D20
D2
C14 1000p
1 8
G1
VCC
7
2
A1
G2
IC1
3 6
Y2 Y1
5
4
GND
A2
L5 1u
L6 1u
: TC7WT125FU
: AVRM1608080MAA
Radio Side
L2 1u
L3
1u
IC1
D2
D3~6
D12~19 : AVRM1608080MAA
Display Side
A
D20
C41 1000p
1 8
G1
VCC
2
7
A1 G2
IC2
3 6
Y2
Y1
A
4
5
GND A2
A
TK-7180
CN3
1
SPI
2
GND
3
8C
4
SB
5
GND
6
PSW
7
MIC
8
ME
9
PSENS
10
RXD
11
TXD
12
GND
13
SHIFT
14
RST2
E40-6377-05
: TC7WT125FU
: MINISMDM075/24
: DA204U
CN2
30
SPI
29
SPI
28
SPI
27
SPI
26
SPI
25
SPI
24
GND
23
8C
22
SB
21
SB
20
NC
19
PSW
18
GND
17
GND
16
MIC
15
ME
14
GND
13
PSENS
12
RST2
11
(LCDRST)
10
(LCDDI)
9
(LCDDO)
8
(CLK)
7
SHIFT
6
NC
5
5C
4
TXD
3
RXD
2
GND
1
(DM)
E40-6412-05
A
77